List questions from fake-proofs

Published on 19 Jan 2021 - 21:42

47

Views

Two ways to evaluate a probability — different results.

Published on 20 Jan 2021 - 12:22

196

Views

Confusion about the definition of maximal ideal

Published on 24 Jan 2021 - 14:51

55

Views

Flawed induction proof

Published on 29 Jan 2021 - 9:35

171

Views

Mistake proving that $3 = 0$

Published on 01 Feb 2021 - 20:55

39

Views

Why does the following method for finding the intersection of two vectors spaces fail?

Published on 01 Feb 2021 - 23:53

686

Views

Trick/Fake proof of 2x2=5 ; algebraic form

Published on 03 Feb 2021 - 19:46

61

Views

Dealing with poisson distributions from the Cambridge Admissons Exam

Published on 04 Feb 2021 - 2:52

306

Views

Find the ordered pair $(a,b)$ of real numbers for which $x^2+ax+b$ has a non-real root whose cube is $343$.

Published on 04 Feb 2021 - 17:08

72

Views

Attempt at counting (0,1)

Published on 09 Feb 2021 - 6:53

108

Views

Show that the inverse function is continuous

Published on 14 Feb 2021 - 23:53

92

Views

Prove that all natural numbers can be divisible by $9999$

Published on 16 Feb 2021 - 21:14

80

Views

Request for help: wrt a proof I've written. No rational $r$ satisfying $2^r = 3$

Published on 17 Feb 2021 - 5:17

169

Views

Proofs: If-then vs modus ponens

Published on 18 Feb 2021 - 23:31

206

Views

Flawed proof by induction that $a^{n-1}=1$

Published on 19 Feb 2021 - 19:18

List Question

What is wrong with my 'proof' of $i=1$?

Two ways to evaluate a probability — different results.

Confusion about the definition of maximal ideal

Flawed induction proof

Mistake proving that $3 = 0$

Why does the following method for finding the intersection of two vectors spaces fail?

Trick/Fake proof of 2x2=5 ; algebraic form

Dealing with poisson distributions from the Cambridge Admissons Exam

Find the ordered pair $(a,b)$ of real numbers for which $x^2+ax+b$ has a non-real root whose cube is $343$.

Attempt at counting (0,1)

Show that the inverse function is continuous

Prove that all natural numbers can be divisible by $9999$

Request for help: wrt a proof I've written. No rational $r$ satisfying $2^r = 3$

Proofs: If-then vs modus ponens

Flawed proof by induction that $a^{n-1}=1$

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